Need a new valve stem seal for a factory 22xx (see my wanted add).
That said, does any other material work there? Tried an orange C02 cart seal and that created some sort of valve lock. I think it was too soft. Hardware store fixes?
22xx valve stem is generally not a repairable item.
That said...if you just want to have a go at fixing it for giggles, might try the urethane like plastic used as an inserted seal in some pop/soda bottles, or the soft-ish plastic used to make lids for some grocery cans...ie coffee.
Don't think either will break the bank, but won't guarantee they will work either. ;)
For other stems, and with access to machine tools...teflon, nylatron or delrin/acetal all work very well.
Al
Hmm thank you!